333 



Left. 



859-10 (very poor) ; 859-11 (three specimens of some as yet 

 unfigured species); 861-21 (large); all the above in Sher- 

 wood's collection from Bradford and Tioga counties. 864-1 

 (two specimens, different from any of HalPs figured species ?) 

 from the Lafayette and Big Shanty road, McKean Co. — Also 

 883-4 (impression) Koulette, Potter Co., Chemung^ VIII g. 



Leptodesma ? not Avicula . Rogers, p. 829, f 



678, as stated on page 162 above. (J. H.) 



Leptomitus zitteli, Walcott, Bulletin U. S. G. S. No. 30, 



page 89, 

 plate 2, fig. 

 'K type" 

 specimen ; 

 2a en~ 

 largemen t 

 of a portion 

 marked by 

 dotted 



lines. In fine grained argillites of Parker's quarry, Georgia 

 township, Vt. Other fragments have been found. Resembles 

 a bundle of the long needles of Hyalonema (a genus of 

 sponges). The resemblance to Serpulites dissolutus (Billings) 

 in Trenton limestone^ is considered deceptive by Walcott, who 

 puts it in Lower Cambrian. See foot note to p, ISJf. above. 



Lescuropteris adiantites. {Weuropteris adiantites. Les- 



quereux. Jour. Soc. Nat. 

 Hist. Boston, Yol. 6, p. 

 419 ; Geol. Pa., plate 20, 

 fig. 1. Re-named, be- 

 cause distinctly related 

 to Lescuropteris moorii, 

 Schimper. Supposed to 

 have been found in clay 

 over Pittsburgh coal bed 

 at Irwin Station, Pa., 

 Coal Flora, page 163, 

 plate 26, figs. 4, ia.) 

 Collett's Ind. Rt. 1883, 

 page 57, plate 11, fig. 6. 

 Upper coal. Also South Salem vein, Pottsville, Pa. XK 



